M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

2008 ML-350 power steering control head leak

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Old 11-28-2016, 06:34 PM
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2008 ML-350
2008 ML-350 power steering control head leak

A couple of months ago I had the battery on my 2008 ML-350 (50k miles) replaced during a regular service at local MB dealer. Soon afterwards I noticed fluid drop on the garage floor, took the car to dealer and it was diagnosed as power steering control head leak. Total repair bill quoted is $2700 with $600 parts and $2100 labor.

Where can I find out if there's recall on power steering for my car?

I'm thinking to shop around a bit to see if I can lower the repair bill. So far I have no problem with the steering, leak is about a couple of drops per week, how long do I have to get the repair done?
Old 11-28-2016, 07:00 PM
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Interestingly I was just offered paying only half of the bill with the other half off'd by MB and dealer, for being a loyal customer. I was told by dealer there's no recall on my car.
Old 11-29-2016, 11:11 AM
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It's probably the common reservoir leak. It's an easy fix (rubber o-ring)

video explaining it here:
Old 11-29-2016, 04:34 PM
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2008 ML320CDI 4Matic, 2006 C350
Yes, on mine it was the Power Steering Reservoir rubber seal.

If it turns out not to be the source of your leak, then you can have the Power Steering Control Head checked by an independent MB repair facility. If it is indeed leaking you can have it rebuilt - no need to replace the entire rack. My FL indy does not rebuild them, but my NC indy does. In fact they have never had to replace an entire rack just to repair a leak.

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